#include <stdio.h>
#include <stdlib.h> 
#include <string.h> 
int zifushu(FILE *fp);
int cishu(FILE *fp);
int line(FILE *fp);
int main(int argc,char *argv[])
{
	char filename[20];
	printf("Please input you want to open the file name:\n");
	gets(filename);
	FILE *fp;
	if((fp=fopen(filename,"r"))==NULL){
		printf("cannot open file\n");
		exit(0);
	}
	char a;
	int count=0;
	printf("请输入一个字符：(c统计字符数/w统计单词数/l统计行数)\n"); 
	scanf("%c",&a);
	if(a=='c'){
		count=zifushu(fp);
	}else if(a=='w'){
		count=cishu(fp);
	}else if(a=='l'){
		count=line(fp);
	}else{
		printf("请输入正确的命令字符\n");
		fclose(fp);
		return 0;
	}
	printf("%d",count);
	fclose(fp);
	return 0;
}
int zifushu(FILE *fp){
	/*FILE *fp;
	if(fp=fopen(file.c,"r")==NULL){
		printf("cannot open file\n");
		exit(0);
	}*/
	char c;
	int count=0;
	while(!feof(fp)){
		c=fgetc(fp);
		if(c>=0&&c<=127){
			count++;
		}
	}
	//fclose(fp);
	return count;
//	printf("%d",count);
}
int cishu(FILE *fp){
	/*FILE *fp;
	if(fp=fopen(file.c,"r")==NULL){
		printf("cannot open file\n");
		exit(0);
	}*/
	char c;
	int count=0;
	while(!feof(fp)){
		c=fgetc(fp);
		if((c>='A'&&c<='Z')||(c>='a'&&c<='z')) count++;
	}
	//fclose(fp);
	return count;
//	printf("%d",count);
}
int line(FILE *fp){
	/*FILE *fp;
	if(fp=fopen(file.c,"r")==NULL){
		printf("cannot open file\n");
		exit(0);
	}*/
	char c;
	int count=0;
	while(!feof(fp)){
		c=fgetc(fp);
		if(c=='\n') count++;
	}
	//fclose(fp);
	return count;
//	printf("%d",count);
}